Tub national lithog



(No Model.)

O.LINDNER.

PNEUMTC TIRE.

Patented Jan. 16, 1894,

UN-ITED STATES PATENT OFFICE.

OTTO LNDNER,OF BRUSSELS, BELGIUM.-

PNEUMATIC TIRE.

SPECIFCAION forming part of Letters Patent No. 512,727, dated January16, 1894. Application filed July 6, 1893. Serial No. 479,714. (Nomodal.) Patented in Belgium December 10, 1892, No. 102,524.

the construction of the cover of that type of pneumatic tire in whichthe cover is held and secured to the wheel rim by reason of its11nstretchable edges engaging with the sides of the wheel rim on theinflation of the air tube, and it consists in rendering the edges of thecover unstretchable or circumferentially rigid by forming beads orenlargements on the edges of the cover andinclosing the said edges in ametallic case or shield, the object being to render the edges of thecover unstretchable or circumferentially rigid in a more perfcct mannerthan is at present known. I attain this end in the manner illustrated bythe accompanying drawings, in which- Figure 1 is a view in transversesection of the cover of a pneumatic tire embodying my invention. Fig. 2is a vicw in transverse section of the metallic case shield, and Figs. 3and 4: are views in transverse section of a pneumatic tire embodying myinvention scated in whee1 rims.

Similar 1etters denote similar parts throu ghout the several. views.

The cover of the tireA is molded in an archshape in cross section and ithas beads or enlargements a, a, formed on its edges, These beads orenlargements may be of any shape in cross section but preferably round.Each of the beads or enlargements a, a, is inclosed in a metallic caseor shield B, Which is effeeted by taking a hoop or ring of a guttersection, and after placing it over the beads or enlargements, closing inthe edges of the said case or shield by means of suitably shaped rolls.By this construction the edges of the cover are rendered unstretchableor circumferentally rigid in a more effectual and reliable manner thanby the insertion of a metal1ic core, or by the construction .of the saidbeads or enlargements et 'hard rubber, vulcanite or the 1ike.

The air tube C is of the usual construction and is fitted with anysuitabl e form of valve for inflation and deflation.

The whee1 rim D may be of the usual crescentshape in cross section asshown by Fig. 3, or of the shape shown by Fig. 4.

I am aware that at the date of myinvention it.was not broadly new andnovel to make the edgesof the cover of a pnenmatic tire unstretchable orcircumterentially rigid and I do not therefore claim such as myinventionbut What I do daim as my invention, and desire to secure by LettersPatent, is

1. The combination witha divided cover for pneumatic tires having beadsor enlargements on its edges, of metallic cases or shields adapted tofit over and inclose the beads or enlargements on the edges of the coverso as to render thcm unstretchable or inelastic, as set forth.

2. In a pneumatic tired wheel the combination with the wheel rim, of acover havng beads or enlargements on its divided eges, of metallic casesor shields adapted to fit over and inclose the beads or enlargements onthe edges of the cover, and of an air tube for infiating the tire, asset forth.

OTTO LINDNER.

Witnesses:

' R. B. TURNER,

GREGORY PHELANL

